Final answer:
Hydroxyapatite is the calcium-phosphate salt that mineralizes bone tissue through the process of calcification.
Step-by-step explanation:
The calcium-phosphate salt that mineralizes bone tissue is called hydroxyapatite. Hydroxyapatite is a mineral formed from calcium phosphate. This mineral is deposited on the collagen fiber matrix of bone tissue, a process called calcification. Calcification only occurs in the presence of collagen fibers.